diff --git a/linux-x64/clang/include/llvm-c/Analysis.h b/linux-x64/clang/include/llvm-c/Analysis.h
index cb9e8ec..270b145 100644
--- a/linux-x64/clang/include/llvm-c/Analysis.h
+++ b/linux-x64/clang/include/llvm-c/Analysis.h
@@ -19,11 +19,10 @@
 #ifndef LLVM_C_ANALYSIS_H
 #define LLVM_C_ANALYSIS_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCAnalysis Analysis
@@ -58,8 +57,6 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/BitReader.h b/linux-x64/clang/include/llvm-c/BitReader.h
index b307ee9..012c0e6 100644
--- a/linux-x64/clang/include/llvm-c/BitReader.h
+++ b/linux-x64/clang/include/llvm-c/BitReader.h
@@ -19,11 +19,10 @@
 #ifndef LLVM_C_BITREADER_H
 #define LLVM_C_BITREADER_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCBitReader Bit Reader
@@ -78,8 +77,6 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/BitWriter.h b/linux-x64/clang/include/llvm-c/BitWriter.h
index 1870515..ea84b65 100644
--- a/linux-x64/clang/include/llvm-c/BitWriter.h
+++ b/linux-x64/clang/include/llvm-c/BitWriter.h
@@ -19,11 +19,10 @@
 #ifndef LLVM_C_BITWRITER_H
 #define LLVM_C_BITWRITER_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCBitWriter Bit Writer
@@ -52,8 +51,6 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/Comdat.h b/linux-x64/clang/include/llvm-c/Comdat.h
index 81fee3f..45b4007 100644
--- a/linux-x64/clang/include/llvm-c/Comdat.h
+++ b/linux-x64/clang/include/llvm-c/Comdat.h
@@ -14,11 +14,10 @@
 #ifndef LLVM_C_COMDAT_H
 #define LLVM_C_COMDAT_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 typedef enum {
   LLVMAnyComdatSelectionKind,        ///< The linker may choose any COMDAT.
@@ -68,8 +67,6 @@
  */
 void LLVMSetComdatSelectionKind(LLVMComdatRef C, LLVMComdatSelectionKind Kind);
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/Core.h b/linux-x64/clang/include/llvm-c/Core.h
index cac2f29..8274213 100644
--- a/linux-x64/clang/include/llvm-c/Core.h
+++ b/linux-x64/clang/include/llvm-c/Core.h
@@ -16,11 +16,10 @@
 #define LLVM_C_CORE_H
 
 #include "llvm-c/ErrorHandling.h"
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMC LLVM-C: C interface to LLVM
@@ -127,6 +126,7 @@
   LLVMShuffleVector  = 52,
   LLVMExtractValue   = 53,
   LLVMInsertValue    = 54,
+  LLVMFreeze         = 68,
 
   /* Atomic operators */
   LLVMFence          = 55,
@@ -144,23 +144,26 @@
 } LLVMOpcode;
 
 typedef enum {
-  LLVMVoidTypeKind,        /**< type with no size */
-  LLVMHalfTypeKind,        /**< 16 bit floating point type */
-  LLVMFloatTypeKind,       /**< 32 bit floating point type */
-  LLVMDoubleTypeKind,      /**< 64 bit floating point type */
-  LLVMX86_FP80TypeKind,    /**< 80 bit floating point type (X87) */
-  LLVMFP128TypeKind,       /**< 128 bit floating point type (112-bit mantissa)*/
-  LLVMPPC_FP128TypeKind,   /**< 128 bit floating point type (two 64-bits) */
-  LLVMLabelTypeKind,       /**< Labels */
-  LLVMIntegerTypeKind,     /**< Arbitrary bit width integers */
-  LLVMFunctionTypeKind,    /**< Functions */
-  LLVMStructTypeKind,      /**< Structures */
-  LLVMArrayTypeKind,       /**< Arrays */
-  LLVMPointerTypeKind,     /**< Pointers */
-  LLVMVectorTypeKind,      /**< SIMD 'packed' format, or other vector type */
-  LLVMMetadataTypeKind,    /**< Metadata */
-  LLVMX86_MMXTypeKind,     /**< X86 MMX */
-  LLVMTokenTypeKind        /**< Tokens */
+  LLVMVoidTypeKind,      /**< type with no size */
+  LLVMHalfTypeKind,      /**< 16 bit floating point type */
+  LLVMFloatTypeKind,     /**< 32 bit floating point type */
+  LLVMDoubleTypeKind,    /**< 64 bit floating point type */
+  LLVMX86_FP80TypeKind,  /**< 80 bit floating point type (X87) */
+  LLVMFP128TypeKind,     /**< 128 bit floating point type (112-bit mantissa)*/
+  LLVMPPC_FP128TypeKind, /**< 128 bit floating point type (two 64-bits) */
+  LLVMLabelTypeKind,     /**< Labels */
+  LLVMIntegerTypeKind,   /**< Arbitrary bit width integers */
+  LLVMFunctionTypeKind,  /**< Functions */
+  LLVMStructTypeKind,    /**< Structures */
+  LLVMArrayTypeKind,     /**< Arrays */
+  LLVMPointerTypeKind,   /**< Pointers */
+  LLVMVectorTypeKind,    /**< Fixed width SIMD vector type */
+  LLVMMetadataTypeKind,  /**< Metadata */
+  LLVMX86_MMXTypeKind,   /**< X86 MMX */
+  LLVMX86_AMXTypeKind,   /**< X86 AMX */
+  LLVMTokenTypeKind,     /**< Tokens */
+  LLVMScalableVectorTypeKind, /**< Scalable SIMD vector type */
+  LLVMBFloatTypeKind     /**< 16 bit brain floating point type */
 } LLVMTypeKind;
 
 typedef enum {
@@ -267,6 +270,7 @@
   LLVMConstantVectorValueKind,
 
   LLVMUndefValueValueKind,
+  LLVMPoisonValueValueKind,
   LLVMConstantAggregateZeroValueKind,
   LLVMConstantDataArrayValueKind,
   LLVMConstantDataVectorValueKind,
@@ -370,9 +374,13 @@
     LLVMAtomicRMWBinOpUMax, /**< Sets the value if it's greater than the
                              original using an unsigned comparison and return
                              the old one */
-    LLVMAtomicRMWBinOpUMin /**< Sets the value if it's greater than the
-                             original using an unsigned comparison  and return
-                             the old one */
+    LLVMAtomicRMWBinOpUMin, /**< Sets the value if it's greater than the
+                              original using an unsigned comparison and return
+                              the old one */
+    LLVMAtomicRMWBinOpFAdd, /**< Add a floating point value and return the
+                              old one */
+    LLVMAtomicRMWBinOpFSub /**< Subtract a floating point value and return the
+                             old one */
 } LLVMAtomicRMWBinOp;
 
 typedef enum {
@@ -620,6 +628,11 @@
 LLVMBool LLVMIsStringAttribute(LLVMAttributeRef A);
 
 /**
+ * Obtain a Type from a context by its registered name.
+ */
+LLVMTypeRef LLVMGetTypeByName2(LLVMContextRef C, const char *Name);
+
+/**
  * @}
  */
 
@@ -860,9 +873,7 @@
  */
 LLVMContextRef LLVMGetModuleContext(LLVMModuleRef M);
 
-/**
- * Obtain a Type from a module by its registered name.
- */
+/** Deprecated: Use LLVMGetTypeByName2 instead. */
 LLVMTypeRef LLVMGetTypeByName(LLVMModuleRef M, const char *Name);
 
 /**
@@ -1159,6 +1170,11 @@
 LLVMTypeRef LLVMHalfTypeInContext(LLVMContextRef C);
 
 /**
+ * Obtain a 16-bit brain floating point type from a context.
+ */
+LLVMTypeRef LLVMBFloatTypeInContext(LLVMContextRef C);
+
+/**
  * Obtain a 32-bit floating point type from a context.
  */
 LLVMTypeRef LLVMFloatTypeInContext(LLVMContextRef C);
@@ -1190,6 +1206,7 @@
  * These map to the functions in this group of the same name.
  */
 LLVMTypeRef LLVMHalfType(void);
+LLVMTypeRef LLVMBFloatType(void);
 LLVMTypeRef LLVMFloatType(void);
 LLVMTypeRef LLVMDoubleType(void);
 LLVMTypeRef LLVMX86FP80Type(void);
@@ -1432,9 +1449,21 @@
 LLVMTypeRef LLVMVectorType(LLVMTypeRef ElementType, unsigned ElementCount);
 
 /**
- * Obtain the number of elements in a vector type.
+ * Create a vector type that contains a defined type and has a scalable
+ * number of elements.
  *
- * This only works on types that represent vectors.
+ * The created type will exist in the context thats its element type
+ * exists in.
+ *
+ * @see llvm::ScalableVectorType::get()
+ */
+LLVMTypeRef LLVMScalableVectorType(LLVMTypeRef ElementType,
+                                   unsigned ElementCount);
+
+/**
+ * Obtain the (possibly scalable) number of elements in a vector type.
+ *
+ * This only works on types that represent vectors (fixed or scalable).
  *
  * @see llvm::VectorType::getNumElements()
  */
@@ -1466,6 +1495,11 @@
 LLVMTypeRef LLVMX86MMXTypeInContext(LLVMContextRef C);
 
 /**
+ * Create a X86 AMX type in a context.
+ */
+LLVMTypeRef LLVMX86AMXTypeInContext(LLVMContextRef C);
+
+/**
  * Create a token type in a context.
  */
 LLVMTypeRef LLVMTokenTypeInContext(LLVMContextRef C);
@@ -1482,6 +1516,7 @@
 LLVMTypeRef LLVMVoidType(void);
 LLVMTypeRef LLVMLabelType(void);
 LLVMTypeRef LLVMX86MMXType(void);
+LLVMTypeRef LLVMX86AMXType(void);
 
 /**
  * @}
@@ -1538,7 +1573,9 @@
           macro(Function)                   \
           macro(GlobalVariable)             \
       macro(UndefValue)                     \
+      macro(PoisonValue)                    \
     macro(Instruction)                      \
+      macro(UnaryOperator)                  \
       macro(BinaryOperator)                 \
       macro(CallInst)                       \
         macro(IntrinsicInst)                \
@@ -1571,6 +1608,8 @@
       macro(ResumeInst)                     \
       macro(CleanupReturnInst)              \
       macro(CatchReturnInst)                \
+      macro(CatchSwitchInst)                \
+      macro(CallBrInst)                     \
       macro(FuncletPadInst)                 \
         macro(CatchPadInst)                 \
         macro(CleanupPadInst)               \
@@ -1592,7 +1631,11 @@
           macro(ZExtInst)                   \
         macro(ExtractValueInst)             \
         macro(LoadInst)                     \
-        macro(VAArgInst)
+        macro(VAArgInst)                    \
+        macro(FreezeInst)                   \
+      macro(AtomicCmpXchgInst)              \
+      macro(AtomicRMWInst)                  \
+      macro(FenceInst)
 
 /**
  * @defgroup LLVMCCoreValueGeneral General APIs
@@ -1665,6 +1708,11 @@
 LLVMBool LLVMIsUndef(LLVMValueRef Val);
 
 /**
+ * Determine whether a value instance is poisonous.
+ */
+LLVMBool LLVMIsPoison(LLVMValueRef Val);
+
+/**
  * Convert value instances between types.
  *
  * Internally, an LLVMValueRef is "pinned" to a specific type. This
@@ -1823,6 +1871,13 @@
 LLVMValueRef LLVMGetUndef(LLVMTypeRef Ty);
 
 /**
+ * Obtain a constant value referring to a poison value of a type.
+ *
+ * @see llvm::PoisonValue::get()
+ */
+LLVMValueRef LLVMGetPoison(LLVMTypeRef Ty);
+
+/**
  * Determine whether a value instance is null.
  *
  * @see llvm::Constant::isNullValue()
@@ -2679,7 +2734,7 @@
  * no previous global aliases.
  */
 LLVMValueRef LLVMGetPreviousGlobalIFunc(LLVMValueRef IFunc);
-  
+
 /**
  * Retrieves the resolver function associated with this indirect function, or
  * NULL if it doesn't not exist.
@@ -2933,7 +2988,7 @@
  */
 void LLVMAppendExistingBasicBlock(LLVMValueRef Fn,
                                   LLVMBasicBlockRef BB);
-  
+
 /**
  * Create a new basic block without inserting it into a function.
  *
@@ -3240,8 +3295,8 @@
  * This expects an LLVMValueRef that corresponds to a llvm::CallInst or
  * llvm::InvokeInst.
  *
- * @see llvm::CallInst::getCalledValue()
- * @see llvm::InvokeInst::getCalledValue()
+ * @see llvm::CallInst::getCalledOperand()
+ * @see llvm::InvokeInst::getCalledOperand()
  */
 LLVMValueRef LLVMGetCalledValue(LLVMValueRef Instr);
 
@@ -3617,7 +3672,7 @@
 /* Get the number of clauses on the landingpad instruction */
 unsigned LLVMGetNumClauses(LLVMValueRef LandingPad);
 
-/* Get the value of the clause at idnex Idx on the landingpad instruction */
+/* Get the value of the clause at index Idx on the landingpad instruction */
 LLVMValueRef LLVMGetClause(LLVMValueRef LandingPad, unsigned Idx);
 
 /* Add a catch or filter clause to the landingpad instruction */
@@ -3744,7 +3799,7 @@
                                   LLVMValueRef Val, const char *Name);
 
 /**
- * Creates and inserts a memset to the specified pointer and the 
+ * Creates and inserts a memset to the specified pointer and the
  * specified value.
  *
  * @see llvm::IRRBuilder::CreateMemSet()
@@ -3757,7 +3812,7 @@
  *
  * @see llvm::IRRBuilder::CreateMemCpy()
  */
-LLVMValueRef LLVMBuildMemCpy(LLVMBuilderRef B, 
+LLVMValueRef LLVMBuildMemCpy(LLVMBuilderRef B,
                              LLVMValueRef Dst, unsigned DstAlign,
                              LLVMValueRef Src, unsigned SrcAlign,
                              LLVMValueRef Size);
@@ -3766,7 +3821,7 @@
  *
  * @see llvm::IRRBuilder::CreateMemMove()
  */
-LLVMValueRef LLVMBuildMemMove(LLVMBuilderRef B, 
+LLVMValueRef LLVMBuildMemMove(LLVMBuilderRef B,
                               LLVMValueRef Dst, unsigned DstAlign,
                               LLVMValueRef Src, unsigned SrcAlign,
                               LLVMValueRef Size);
@@ -3807,8 +3862,12 @@
                                       const char *Name);
 LLVMBool LLVMGetVolatile(LLVMValueRef MemoryAccessInst);
 void LLVMSetVolatile(LLVMValueRef MemoryAccessInst, LLVMBool IsVolatile);
+LLVMBool LLVMGetWeak(LLVMValueRef CmpXchgInst);
+void LLVMSetWeak(LLVMValueRef CmpXchgInst, LLVMBool IsWeak);
 LLVMAtomicOrdering LLVMGetOrdering(LLVMValueRef MemoryAccessInst);
 void LLVMSetOrdering(LLVMValueRef MemoryAccessInst, LLVMAtomicOrdering Ordering);
+LLVMAtomicRMWBinOp LLVMGetAtomicRMWBinOp(LLVMValueRef AtomicRMWInst);
+void LLVMSetAtomicRMWBinOp(LLVMValueRef AtomicRMWInst, LLVMAtomicRMWBinOp BinOp);
 
 /* Casts */
 LLVMValueRef LLVMBuildTrunc(LLVMBuilderRef, LLVMValueRef Val,
@@ -3893,6 +3952,8 @@
 LLVMValueRef LLVMBuildInsertValue(LLVMBuilderRef, LLVMValueRef AggVal,
                                   LLVMValueRef EltVal, unsigned Index,
                                   const char *Name);
+LLVMValueRef LLVMBuildFreeze(LLVMBuilderRef, LLVMValueRef Val,
+                             const char *Name);
 
 LLVMValueRef LLVMBuildIsNull(LLVMBuilderRef, LLVMValueRef Val,
                              const char *Name);
@@ -3912,6 +3973,26 @@
                                     LLVMAtomicOrdering FailureOrdering,
                                     LLVMBool SingleThread);
 
+/**
+ * Get the number of elements in the mask of a ShuffleVector instruction.
+ */
+unsigned LLVMGetNumMaskElements(LLVMValueRef ShuffleVectorInst);
+
+/**
+ * \returns a constant that specifies that the result of a \c ShuffleVectorInst
+ * is undefined.
+ */
+int LLVMGetUndefMaskElem(void);
+
+/**
+ * Get the mask value at position Elt in the mask of a ShuffleVector
+ * instruction.
+ *
+ * \Returns the result of \c LLVMGetUndefMaskElem() if the mask value is undef
+ * at that position.
+ */
+int LLVMGetMaskValue(LLVMValueRef ShuffleVectorInst, unsigned Elt);
+
 LLVMBool LLVMIsAtomicSingleThread(LLVMValueRef AtomicInst);
 void LLVMSetAtomicSingleThread(LLVMValueRef AtomicInst, LLVMBool SingleThread);
 
@@ -4072,8 +4153,6 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif /* LLVM_C_CORE_H */
diff --git a/linux-x64/clang/include/llvm-c/DataTypes.h b/linux-x64/clang/include/llvm-c/DataTypes.h
index 893b22b..4eb0ac9 100644
--- a/linux-x64/clang/include/llvm-c/DataTypes.h
+++ b/linux-x64/clang/include/llvm-c/DataTypes.h
@@ -24,12 +24,6 @@
 #ifndef LLVM_C_DATATYPES_H
 #define LLVM_C_DATATYPES_H
 
-#ifdef __cplusplus
-#include <cmath>
-#else
-#include <math.h>
-#endif
-
 #include <inttypes.h>
 #include <stdint.h>
 
@@ -83,8 +77,4 @@
 # define UINT64_MAX 0xffffffffffffffffULL
 #endif
 
-#ifndef HUGE_VALF
-#define HUGE_VALF (float)HUGE_VAL
-#endif
-
 #endif /* LLVM_C_DATATYPES_H */
diff --git a/linux-x64/clang/include/llvm-c/DebugInfo.h b/linux-x64/clang/include/llvm-c/DebugInfo.h
index 33c8110..5a9cd8e 100644
--- a/linux-x64/clang/include/llvm-c/DebugInfo.h
+++ b/linux-x64/clang/include/llvm-c/DebugInfo.h
@@ -17,10 +17,9 @@
 #define LLVM_C_DEBUGINFO_H
 
 #include "llvm-c/Core.h"
+#include "llvm-c/ExternC.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * Debug info flags.
@@ -32,7 +31,7 @@
   LLVMDIFlagPublic = 3,
   LLVMDIFlagFwdDecl = 1 << 2,
   LLVMDIFlagAppleBlock = 1 << 3,
-  LLVMDIFlagBlockByrefStruct = 1 << 4,
+  LLVMDIFlagReservedBit4 = 1 << 4,
   LLVMDIFlagVirtual = 1 << 5,
   LLVMDIFlagArtificial = 1 << 6,
   LLVMDIFlagExplicit = 1 << 7,
@@ -160,7 +159,9 @@
   LLVMDIImportedEntityMetadataKind,
   LLVMDIMacroMetadataKind,
   LLVMDIMacroFileMetadataKind,
-  LLVMDICommonBlockMetadataKind
+  LLVMDICommonBlockMetadataKind,
+  LLVMDIStringTypeMetadataKind,
+  LLVMDIGenericSubrangeMetadataKind
 };
 typedef unsigned LLVMMetadataKind;
 
@@ -170,6 +171,19 @@
 typedef unsigned LLVMDWARFTypeEncoding;
 
 /**
+ * Describes the kind of macro declaration used for LLVMDIBuilderCreateMacro.
+ * @see llvm::dwarf::MacinfoRecordType
+ * @note Values are from DW_MACINFO_* constants in the DWARF specification.
+ */
+typedef enum {
+  LLVMDWARFMacinfoRecordTypeDefine = 0x01,
+  LLVMDWARFMacinfoRecordTypeMacro = 0x02,
+  LLVMDWARFMacinfoRecordTypeStartFile = 0x03,
+  LLVMDWARFMacinfoRecordTypeEndFile = 0x04,
+  LLVMDWARFMacinfoRecordTypeVendorExt = 0xff
+} LLVMDWARFMacinfoRecordType;
+
+/**
  * The current debug metadata version number.
  */
 unsigned LLVMDebugMetadataVersion(void);
@@ -238,6 +252,10 @@
  * \param SplitDebugInlining    Whether to emit inline debug info.
  * \param DebugInfoForProfiling Whether to emit extra debug info for
  *                              profile collection.
+ * \param SysRoot         The Clang system root (value of -isysroot).
+ * \param SysRootLen      The length of the C string passed to \c SysRoot.
+ * \param SDK           The SDK. On Darwin, the last component of the sysroot.
+ * \param SDKLen        The length of the C string passed to \c SDK.
  */
 LLVMMetadataRef LLVMDIBuilderCreateCompileUnit(
     LLVMDIBuilderRef Builder, LLVMDWARFSourceLanguage Lang,
@@ -245,7 +263,8 @@
     LLVMBool isOptimized, const char *Flags, size_t FlagsLen,
     unsigned RuntimeVer, const char *SplitName, size_t SplitNameLen,
     LLVMDWARFEmissionKind Kind, unsigned DWOId, LLVMBool SplitDebugInlining,
-    LLVMBool DebugInfoForProfiling);
+    LLVMBool DebugInfoForProfiling, const char *SysRoot, size_t SysRootLen,
+    const char *SDK, size_t SDKLen);
 
 /**
  * Create a file descriptor to hold debugging information for a file.
@@ -271,15 +290,15 @@
  * \param ConfigMacrosLen The length of the C string passed to \c ConfigMacros.
  * \param IncludePath     The path to the module map file.
  * \param IncludePathLen  The length of the C string passed to \c IncludePath.
- * \param ISysRoot        The Clang system root (value of -isysroot).
- * \param ISysRootLen     The length of the C string passed to \c ISysRoot.
+ * \param APINotesFile    The path to an API notes file for the module.
+ * \param APINotesFileLen The length of the C string passed to \c APINotestFile.
  */
 LLVMMetadataRef
 LLVMDIBuilderCreateModule(LLVMDIBuilderRef Builder, LLVMMetadataRef ParentScope,
                           const char *Name, size_t NameLen,
                           const char *ConfigMacros, size_t ConfigMacrosLen,
                           const char *IncludePath, size_t IncludePathLen,
-                          const char *ISysRoot, size_t ISysRootLen);
+                          const char *APINotesFile, size_t APINotesFileLen);
 
 /**
  * Creates a new descriptor for a namespace with the specified parent scope.
@@ -522,6 +541,38 @@
                                   LLVMDIFlags Flags);
 
 /**
+ * Create debugging information entry for a macro.
+ * @param Builder         The DIBuilder.
+ * @param ParentMacroFile Macro parent (could be NULL).
+ * @param Line            Source line number where the macro is defined.
+ * @param RecordType      DW_MACINFO_define or DW_MACINFO_undef.
+ * @param Name            Macro name.
+ * @param NameLen         Macro name length.
+ * @param Value           Macro value.
+ * @param ValueLen        Macro value length.
+ */
+LLVMMetadataRef LLVMDIBuilderCreateMacro(LLVMDIBuilderRef Builder,
+                                         LLVMMetadataRef ParentMacroFile,
+                                         unsigned Line,
+                                         LLVMDWARFMacinfoRecordType RecordType,
+                                         const char *Name, size_t NameLen,
+                                         const char *Value, size_t ValueLen);
+
+/**
+ * Create debugging information temporary entry for a macro file.
+ * List of macro node direct children will be calculated by DIBuilder,
+ * using the \p ParentMacroFile relationship.
+ * @param Builder         The DIBuilder.
+ * @param ParentMacroFile Macro parent (could be NULL).
+ * @param Line            Source line number where the macro file is included.
+ * @param File            File descriptor containing the name of the macro file.
+ */
+LLVMMetadataRef
+LLVMDIBuilderCreateTempMacroFile(LLVMDIBuilderRef Builder,
+                                 LLVMMetadataRef ParentMacroFile, unsigned Line,
+                                 LLVMMetadataRef File);
+
+/**
  * Create debugging information entry for an enumerator.
  * @param Builder        The DIBuilder.
  * @param Name           Enumerator name.
@@ -830,7 +881,7 @@
 LLVMDIBuilderCreateTypedef(LLVMDIBuilderRef Builder, LLVMMetadataRef Type,
                            const char *Name, size_t NameLen,
                            LLVMMetadataRef File, unsigned LineNo,
-                           LLVMMetadataRef Scope);
+                           LLVMMetadataRef Scope, uint32_t AlignInBits);
 
 /**
  * Create debugging information entry to establish inheritance relationship
@@ -1308,8 +1359,6 @@
  */
 LLVMMetadataKind LLVMGetMetadataKind(LLVMMetadataRef Metadata);
 
-#ifdef __cplusplus
-} /* end extern "C" */
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/Disassembler.h b/linux-x64/clang/include/llvm-c/Disassembler.h
index 3adcc3c..b1cb35d 100644
--- a/linux-x64/clang/include/llvm-c/Disassembler.h
+++ b/linux-x64/clang/include/llvm-c/Disassembler.h
@@ -16,6 +16,7 @@
 #define LLVM_C_DISASSEMBLER_H
 
 #include "llvm-c/DisassemblerTypes.h"
+#include "llvm-c/ExternC.h"
 
 /**
  * @defgroup LLVMCDisassembler Disassembler
@@ -24,9 +25,7 @@
  * @{
  */
 
-#ifdef __cplusplus
-extern "C" {
-#endif /* !defined(__cplusplus) */
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * Create a disassembler for the TripleName.  Symbolic disassembly is supported
@@ -106,8 +105,6 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif /* !defined(__cplusplus) */
+LLVM_C_EXTERN_C_END
 
 #endif /* LLVM_C_DISASSEMBLER_H */
diff --git a/linux-x64/clang/include/llvm-c/Error.h b/linux-x64/clang/include/llvm-c/Error.h
index 5294306..bc702ac 100644
--- a/linux-x64/clang/include/llvm-c/Error.h
+++ b/linux-x64/clang/include/llvm-c/Error.h
@@ -14,9 +14,9 @@
 #ifndef LLVM_C_ERROR_H
 #define LLVM_C_ERROR_H
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+#include "llvm-c/ExternC.h"
+
+LLVM_C_EXTERN_C_BEGIN
 
 #define LLVMErrorSuccess 0
 
@@ -62,8 +62,11 @@
  */
 LLVMErrorTypeId LLVMGetStringErrorTypeId(void);
 
-#ifdef __cplusplus
-}
-#endif
+/**
+ * Create a StringError.
+ */
+LLVMErrorRef LLVMCreateStringError(const char *ErrMsg);
+
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/ErrorHandling.h b/linux-x64/clang/include/llvm-c/ErrorHandling.h
index 4927349..c6f7ff3 100644
--- a/linux-x64/clang/include/llvm-c/ErrorHandling.h
+++ b/linux-x64/clang/include/llvm-c/ErrorHandling.h
@@ -14,9 +14,9 @@
 #ifndef LLVM_C_ERROR_HANDLING_H
 #define LLVM_C_ERROR_HANDLING_H
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+#include "llvm-c/ExternC.h"
+
+LLVM_C_EXTERN_C_BEGIN
 
 typedef void (*LLVMFatalErrorHandler)(const char *Reason);
 
@@ -42,8 +42,6 @@
  */
 void LLVMEnablePrettyStackTrace(void);
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/ExecutionEngine.h b/linux-x64/clang/include/llvm-c/ExecutionEngine.h
index ef714cd..c5fc9bd 100644
--- a/linux-x64/clang/include/llvm-c/ExecutionEngine.h
+++ b/linux-x64/clang/include/llvm-c/ExecutionEngine.h
@@ -19,13 +19,12 @@
 #ifndef LLVM_C_EXECUTIONENGINE_H
 #define LLVM_C_EXECUTIONENGINE_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Target.h"
 #include "llvm-c/TargetMachine.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCExecutionEngine Execution Engine
@@ -150,6 +149,11 @@
 
 uint64_t LLVMGetFunctionAddress(LLVMExecutionEngineRef EE, const char *Name);
 
+/// Returns true on error, false on success. If true is returned then the error
+/// message is copied to OutStr and cleared in the ExecutionEngine instance.
+LLVMBool LLVMExecutionEngineGetErrMsg(LLVMExecutionEngineRef EE,
+                                      char **OutError);
+
 /*===-- Operations on memory managers -------------------------------------===*/
 
 typedef uint8_t *(*LLVMMemoryManagerAllocateCodeSectionCallback)(
@@ -193,8 +197,6 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif /* defined(__cplusplus) */
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/ExternC.h b/linux-x64/clang/include/llvm-c/ExternC.h
new file mode 100644
index 0000000..4240f7c
--- /dev/null
+++ b/linux-x64/clang/include/llvm-c/ExternC.h
@@ -0,0 +1,39 @@
+/*===- llvm-c/ExternC.h - Wrapper for 'extern "C"' ----------------*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This file defines an 'extern "C"' wrapper                                  *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_C_EXTERN_C_H
+#define LLVM_C_EXTERN_C_H
+
+#ifdef __clang__
+#define LLVM_C_STRICT_PROTOTYPES_BEGIN                                         \
+  _Pragma("clang diagnostic push")                                             \
+      _Pragma("clang diagnostic error \"-Wstrict-prototypes\"")
+#define LLVM_C_STRICT_PROTOTYPES_END _Pragma("clang diagnostic pop")
+#else
+#define LLVM_C_STRICT_PROTOTYPES_BEGIN
+#define LLVM_C_STRICT_PROTOTYPES_END
+#endif
+
+#ifdef __cplusplus
+#define LLVM_C_EXTERN_C_BEGIN                                                  \
+  extern "C" {                                                                 \
+  LLVM_C_STRICT_PROTOTYPES_BEGIN
+#define LLVM_C_EXTERN_C_END                                                    \
+  LLVM_C_STRICT_PROTOTYPES_END                                                 \
+  }
+#else
+#define LLVM_C_EXTERN_C_BEGIN LLVM_C_STRICT_PROTOTYPES_BEGIN
+#define LLVM_C_EXTERN_C_END LLVM_C_STRICT_PROTOTYPES_END
+#endif
+
+#endif
diff --git a/linux-x64/clang/include/llvm-c/IRReader.h b/linux-x64/clang/include/llvm-c/IRReader.h
index 4d0b696..5a3f633 100644
--- a/linux-x64/clang/include/llvm-c/IRReader.h
+++ b/linux-x64/clang/include/llvm-c/IRReader.h
@@ -14,11 +14,10 @@
 #ifndef LLVM_C_IRREADER_H
 #define LLVM_C_IRREADER_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * Read LLVM IR from a memory buffer and convert it into an in-memory Module
@@ -33,8 +32,6 @@
                               LLVMMemoryBufferRef MemBuf, LLVMModuleRef *OutM,
                               char **OutMessage);
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/Initialization.h b/linux-x64/clang/include/llvm-c/Initialization.h
index 36c41db..0d59de8 100644
--- a/linux-x64/clang/include/llvm-c/Initialization.h
+++ b/linux-x64/clang/include/llvm-c/Initialization.h
@@ -16,11 +16,10 @@
 #ifndef LLVM_C_INITIALIZATION_H
 #define LLVM_C_INITIALIZATION_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCInitialization Initialization Routines
@@ -49,8 +48,6 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/LLJIT.h b/linux-x64/clang/include/llvm-c/LLJIT.h
new file mode 100644
index 0000000..28eb8bb
--- /dev/null
+++ b/linux-x64/clang/include/llvm-c/LLJIT.h
@@ -0,0 +1,213 @@
+/*===----------- llvm-c/LLJIT.h - OrcV2 LLJIT C bindings --------*- C++ -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This header declares the C interface to the LLJIT class in                 *|
+|* libLLVMOrcJIT.a, which provides a simple MCJIT-like ORC JIT.               *|
+|*                                                                            *|
+|* Many exotic languages can interoperate with C code but have a harder time  *|
+|* with C++ due to name mangling. So in addition to C, this interface enables *|
+|* tools written in such languages.                                           *|
+|*                                                                            *|
+|* Note: This interface is experimental. It is *NOT* stable, and may be       *|
+|*       changed without warning. Only C API usage documentation is           *|
+|*       provided. See the C++ documentation for all higher level ORC API     *|
+|*       details.                                                             *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_C_LLJIT_H
+#define LLVM_C_LLJIT_H
+
+#include "llvm-c/Error.h"
+#include "llvm-c/Orc.h"
+#include "llvm-c/TargetMachine.h"
+#include "llvm-c/Types.h"
+
+LLVM_C_EXTERN_C_BEGIN
+
+/**
+ * A function for constructing an ObjectLinkingLayer instance to be used
+ * by an LLJIT instance.
+ *
+ * Clients can call LLVMOrcLLJITBuilderSetObjectLinkingLayerCreator to
+ * set the creator function to use when constructing an LLJIT instance.
+ * This can be used to override the default linking layer implementation
+ * that would otherwise be chosen by LLJITBuilder.
+ *
+ * Object linking layers returned by this function will become owned by the
+ * LLJIT instance. The client is not responsible for managing their lifetimes
+ * after the function returns.
+ */
+typedef LLVMOrcObjectLayerRef (
+    *LLVMOrcLLJITBuilderObjectLinkingLayerCreatorFunction)(
+    void *Ctx, LLVMOrcExecutionSessionRef ES, const char *Triple);
+
+/**
+ * A reference to an orc::LLJITBuilder instance.
+ */
+typedef struct LLVMOrcOpaqueLLJITBuilder *LLVMOrcLLJITBuilderRef;
+
+/**
+ * A reference to an orc::LLJIT instance.
+ */
+typedef struct LLVMOrcOpaqueLLJIT *LLVMOrcLLJITRef;
+
+/**
+ * Create an LLVMOrcLLJITBuilder.
+ *
+ * The client owns the resulting LLJITBuilder and should dispose of it using
+ * LLVMOrcDisposeLLJITBuilder once they are done with it.
+ */
+LLVMOrcLLJITBuilderRef LLVMOrcCreateLLJITBuilder(void);
+
+/**
+ * Dispose of an LLVMOrcLLJITBuilderRef. This should only be called if ownership
+ * has not been passed to LLVMOrcCreateLLJIT (e.g. because some error prevented
+ * that function from being called).
+ */
+void LLVMOrcDisposeLLJITBuilder(LLVMOrcLLJITBuilderRef Builder);
+
+/**
+ * Set the JITTargetMachineBuilder to be used when constructing the LLJIT
+ * instance. Calling this function is optional: if it is not called then the
+ * LLJITBuilder will use JITTargeTMachineBuilder::detectHost to construct a
+ * JITTargetMachineBuilder.
+ */
+void LLVMOrcLLJITBuilderSetJITTargetMachineBuilder(
+    LLVMOrcLLJITBuilderRef Builder, LLVMOrcJITTargetMachineBuilderRef JTMB);
+
+/**
+ * Set an ObjectLinkingLayer creator function for this LLJIT instance.
+ */
+void LLVMOrcLLJITBuilderSetObjectLinkingLayerCreator(
+    LLVMOrcLLJITBuilderRef Builder,
+    LLVMOrcLLJITBuilderObjectLinkingLayerCreatorFunction F, void *Ctx);
+
+/**
+ * Create an LLJIT instance from an LLJITBuilder.
+ *
+ * This operation takes ownership of the Builder argument: clients should not
+ * dispose of the builder after calling this function (even if the function
+ * returns an error). If a null Builder argument is provided then a
+ * default-constructed LLJITBuilder will be used.
+ *
+ * On success the resulting LLJIT instance is uniquely owned by the client and
+ * automatically manages the memory of all JIT'd code and all modules that are
+ * transferred to it (e.g. via LLVMOrcLLJITAddLLVMIRModule). Disposing of the
+ * LLJIT instance will free all memory managed by the JIT, including JIT'd code
+ * and not-yet compiled modules.
+ */
+LLVMErrorRef LLVMOrcCreateLLJIT(LLVMOrcLLJITRef *Result,
+                                LLVMOrcLLJITBuilderRef Builder);
+
+/**
+ * Dispose of an LLJIT instance.
+ */
+LLVMErrorRef LLVMOrcDisposeLLJIT(LLVMOrcLLJITRef J);
+
+/**
+ * Get a reference to the ExecutionSession for this LLJIT instance.
+ *
+ * The ExecutionSession is owned by the LLJIT instance. The client is not
+ * responsible for managing its memory.
+ */
+LLVMOrcExecutionSessionRef LLVMOrcLLJITGetExecutionSession(LLVMOrcLLJITRef J);
+
+/**
+ * Return a reference to the Main JITDylib.
+ *
+ * The JITDylib is owned by the LLJIT instance. The client is not responsible
+ * for managing its memory.
+ */
+LLVMOrcJITDylibRef LLVMOrcLLJITGetMainJITDylib(LLVMOrcLLJITRef J);
+
+/**
+ * Return the target triple for this LLJIT instance. This string is owned by
+ * the LLJIT instance and should not be freed by the client.
+ */
+const char *LLVMOrcLLJITGetTripleString(LLVMOrcLLJITRef J);
+
+/**
+ * Returns the global prefix character according to the LLJIT's DataLayout.
+ */
+char LLVMOrcLLJITGetGlobalPrefix(LLVMOrcLLJITRef J);
+
+/**
+ * Mangles the given string according to the LLJIT instance's DataLayout, then
+ * interns the result in the SymbolStringPool and returns a reference to the
+ * pool entry. Clients should call LLVMOrcReleaseSymbolStringPoolEntry to
+ * decrement the ref-count on the pool entry once they are finished with this
+ * value.
+ */
+LLVMOrcSymbolStringPoolEntryRef
+LLVMOrcLLJITMangleAndIntern(LLVMOrcLLJITRef J, const char *UnmangledName);
+
+/**
+ * Add a buffer representing an object file to the given JITDylib in the given
+ * LLJIT instance. This operation transfers ownership of the buffer to the
+ * LLJIT instance. The buffer should not be disposed of or referenced once this
+ * function returns.
+ *
+ * Resources associated with the given object will be tracked by the given
+ * JITDylib's default resource tracker.
+ */
+LLVMErrorRef LLVMOrcLLJITAddObjectFile(LLVMOrcLLJITRef J, LLVMOrcJITDylibRef JD,
+                                       LLVMMemoryBufferRef ObjBuffer);
+
+/**
+ * Add a buffer representing an object file to the given ResourceTracker's
+ * JITDylib in the given LLJIT instance. This operation transfers ownership of
+ * the buffer to the LLJIT instance. The buffer should not be disposed of or
+ * referenced once this function returns.
+ *
+ * Resources associated with the given object will be tracked by ResourceTracker
+ * RT.
+ */
+LLVMErrorRef LLVMOrcLLJITAddObjectFileWithRT(LLVMOrcLLJITRef J,
+                                             LLVMOrcResourceTrackerRef RT,
+                                             LLVMMemoryBufferRef ObjBuffer);
+
+/**
+ * Add an IR module to the given JITDylib in the given LLJIT instance. This
+ * operation transfers ownership of the TSM argument to the LLJIT instance.
+ * The TSM argument should not be disposed of or referenced once this
+ * function returns.
+ *
+ * Resources associated with the given Module will be tracked by the given
+ * JITDylib's default resource tracker.
+ */
+LLVMErrorRef LLVMOrcLLJITAddLLVMIRModule(LLVMOrcLLJITRef J,
+                                         LLVMOrcJITDylibRef JD,
+                                         LLVMOrcThreadSafeModuleRef TSM);
+
+/**
+ * Add an IR module to the given ResourceTracker's JITDylib in the given LLJIT
+ * instance. This operation transfers ownership of the TSM argument to the LLJIT
+ * instance. The TSM argument should not be disposed of or referenced once this
+ * function returns.
+ *
+ * Resources associated with the given Module will be tracked by ResourceTracker
+ * RT.
+ */
+LLVMErrorRef LLVMOrcLLJITAddLLVMIRModuleWithRT(LLVMOrcLLJITRef J,
+                                               LLVMOrcResourceTrackerRef JD,
+                                               LLVMOrcThreadSafeModuleRef TSM);
+
+/**
+ * Look up the given symbol in the main JITDylib of the given LLJIT instance.
+ *
+ * This operation does not take ownership of the Name argument.
+ */
+LLVMErrorRef LLVMOrcLLJITLookup(LLVMOrcLLJITRef J,
+                                LLVMOrcJITTargetAddress *Result,
+                                const char *Name);
+
+LLVM_C_EXTERN_C_END
+
+#endif /* LLVM_C_LLJIT_H */
diff --git a/linux-x64/clang/include/llvm-c/LinkTimeOptimizer.h b/linux-x64/clang/include/llvm-c/LinkTimeOptimizer.h
deleted file mode 100644
index 19b4f5c..0000000
--- a/linux-x64/clang/include/llvm-c/LinkTimeOptimizer.h
+++ /dev/null
@@ -1,68 +0,0 @@
-//===-- llvm/LinkTimeOptimizer.h - LTO Public C Interface -------*- C++ -*-===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This header provides a C API to use the LLVM link time optimization
-// library. This is intended to be used by linkers which are C-only in
-// their implementation for performing LTO.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_C_LINKTIMEOPTIMIZER_H
-#define LLVM_C_LINKTIMEOPTIMIZER_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * @defgroup LLVMCLinkTimeOptimizer Link Time Optimization
- * @ingroup LLVMC
- *
- * @{
- */
-
-  /// This provides a dummy type for pointers to the LTO object.
-  typedef void* llvm_lto_t;
-
-  /// This provides a C-visible enumerator to manage status codes.
-  /// This should map exactly onto the C++ enumerator LTOStatus.
-  typedef enum llvm_lto_status {
-    LLVM_LTO_UNKNOWN,
-    LLVM_LTO_OPT_SUCCESS,
-    LLVM_LTO_READ_SUCCESS,
-    LLVM_LTO_READ_FAILURE,
-    LLVM_LTO_WRITE_FAILURE,
-    LLVM_LTO_NO_TARGET,
-    LLVM_LTO_NO_WORK,
-    LLVM_LTO_MODULE_MERGE_FAILURE,
-    LLVM_LTO_ASM_FAILURE,
-
-    //  Added C-specific error codes
-    LLVM_LTO_NULL_OBJECT
-  } llvm_lto_status_t;
-
-  /// This provides C interface to initialize link time optimizer. This allows
-  /// linker to use dlopen() interface to dynamically load LinkTimeOptimizer.
-  /// extern "C" helps, because dlopen() interface uses name to find the symbol.
-  extern llvm_lto_t llvm_create_optimizer(void);
-  extern void llvm_destroy_optimizer(llvm_lto_t lto);
-
-  extern llvm_lto_status_t llvm_read_object_file
-    (llvm_lto_t lto, const char* input_filename);
-  extern llvm_lto_status_t llvm_optimize_modules
-    (llvm_lto_t lto, const char* output_filename);
-
-/**
- * @}
- */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/linux-x64/clang/include/llvm-c/Linker.h b/linux-x64/clang/include/llvm-c/Linker.h
index 9085130..1ad9cc9 100644
--- a/linux-x64/clang/include/llvm-c/Linker.h
+++ b/linux-x64/clang/include/llvm-c/Linker.h
@@ -14,11 +14,10 @@
 #ifndef LLVM_C_LINKER_H
 #define LLVM_C_LINKER_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /* This enum is provided for backwards-compatibility only. It has no effect. */
 typedef enum {
@@ -34,8 +33,6 @@
 */
 LLVMBool LLVMLinkModules2(LLVMModuleRef Dest, LLVMModuleRef Src);
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/Object.h b/linux-x64/clang/include/llvm-c/Object.h
index 1e9b703..9a9596a 100644
--- a/linux-x64/clang/include/llvm-c/Object.h
+++ b/linux-x64/clang/include/llvm-c/Object.h
@@ -19,12 +19,11 @@
 #ifndef LLVM_C_OBJECT_H
 #define LLVM_C_OBJECT_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 #include "llvm/Config/llvm-config.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCObject Object file reading and writing
@@ -226,8 +225,6 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif /* defined(__cplusplus) */
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/Orc.h b/linux-x64/clang/include/llvm-c/Orc.h
new file mode 100644
index 0000000..183107c
--- /dev/null
+++ b/linux-x64/clang/include/llvm-c/Orc.h
@@ -0,0 +1,538 @@
+/*===---------------- llvm-c/Orc.h - OrcV2 C bindings -----------*- C++ -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This header declares the C interface to libLLVMOrcJIT.a, which implements  *|
+|* JIT compilation of LLVM IR. Minimal documentation of C API specific issues *|
+|* (especially memory ownership rules) is provided. Core Orc concepts are     *|
+|* documented in llvm/docs/ORCv2.rst and APIs are documented in the C++       *|
+|* headers                                                                    *|
+|*                                                                            *|
+|* Many exotic languages can interoperate with C code but have a harder time  *|
+|* with C++ due to name mangling. So in addition to C, this interface enables *|
+|* tools written in such languages.                                           *|
+|*                                                                            *|
+|* Note: This interface is experimental. It is *NOT* stable, and may be       *|
+|*       changed without warning. Only C API usage documentation is           *|
+|*       provided. See the C++ documentation for all higher level ORC API     *|
+|*       details.                                                             *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_C_ORC_H
+#define LLVM_C_ORC_H
+
+#include "llvm-c/Error.h"
+#include "llvm-c/TargetMachine.h"
+#include "llvm-c/Types.h"
+
+LLVM_C_EXTERN_C_BEGIN
+
+/**
+ * Represents an address in the target process.
+ */
+typedef uint64_t LLVMOrcJITTargetAddress;
+
+/**
+ * Represents generic linkage flags for a symbol definition.
+ */
+typedef enum {
+  LLVMJITSymbolGenericFlagsExported = 1U << 0,
+  LLVMJITSymbolGenericFlagsWeak = 1U << 1
+} LLVMJITSymbolGenericFlags;
+
+/**
+ * Represents target specific flags for a symbol definition.
+ */
+typedef uint8_t LLVMJITTargetSymbolFlags;
+
+/**
+ * Represents the linkage flags for a symbol definition.
+ */
+typedef struct {
+  uint8_t GenericFlags;
+  uint8_t TargetFlags;
+} LLVMJITSymbolFlags;
+
+/**
+ * Represents an evaluated symbol address and flags.
+ */
+typedef struct {
+  LLVMOrcJITTargetAddress Address;
+  LLVMJITSymbolFlags Flags;
+} LLVMJITEvaluatedSymbol;
+
+/**
+ * A reference to an orc::ExecutionSession instance.
+ */
+typedef struct LLVMOrcOpaqueExecutionSession *LLVMOrcExecutionSessionRef;
+
+/**
+ * Error reporter function.
+ */
+typedef void (*LLVMOrcErrorReporterFunction)(void *Ctx, LLVMErrorRef Err);
+
+/**
+ * A reference to an orc::SymbolStringPool.
+ */
+typedef struct LLVMOrcOpaqueSymbolStringPool *LLVMOrcSymbolStringPoolRef;
+
+/**
+ * A reference to an orc::SymbolStringPool table entry.
+ */
+typedef struct LLVMOrcOpaqueSymbolStringPoolEntry
+    *LLVMOrcSymbolStringPoolEntryRef;
+
+/**
+ * Represents a pair of a symbol name and an evaluated symbol.
+ */
+typedef struct {
+  LLVMOrcSymbolStringPoolEntryRef Name;
+  LLVMJITEvaluatedSymbol Sym;
+} LLVMJITCSymbolMapPair;
+
+/**
+ * Represents a list of (SymbolStringPtr, JITEvaluatedSymbol) pairs that can be
+ * used to construct a SymbolMap.
+ */
+typedef LLVMJITCSymbolMapPair *LLVMOrcCSymbolMapPairs;
+
+/**
+ * Lookup kind. This can be used by definition generators when deciding whether
+ * to produce a definition for a requested symbol.
+ *
+ * This enum should be kept in sync with llvm::orc::LookupKind.
+ */
+typedef enum {
+  LLVMOrcLookupKindStatic,
+  LLVMOrcLookupKindDLSym
+} LLVMOrcLookupKind;
+
+/**
+ * JITDylib lookup flags. This can be used by definition generators when
+ * deciding whether to produce a definition for a requested symbol.
+ *
+ * This enum should be kept in sync with llvm::orc::JITDylibLookupFlags.
+ */
+typedef enum {
+  LLVMOrcJITDylibLookupFlagsMatchExportedSymbolsOnly,
+  LLVMOrcJITDylibLookupFlagsMatchAllSymbols
+} LLVMOrcJITDylibLookupFlags;
+
+/**
+ * Symbol lookup flags for lookup sets. This should be kept in sync with
+ * llvm::orc::SymbolLookupFlags.
+ */
+typedef enum {
+  LLVMOrcSymbolLookupFlagsRequiredSymbol,
+  LLVMOrcSymbolLookupFlagsWeaklyReferencedSymbol
+} LLVMOrcSymbolLookupFlags;
+
+/**
+ * An element type for a symbol lookup set.
+ */
+typedef struct {
+  LLVMOrcSymbolStringPoolEntryRef Name;
+  LLVMOrcSymbolLookupFlags LookupFlags;
+} LLVMOrcCLookupSetElement;
+
+/**
+ * A set of symbols to look up / generate.
+ *
+ * The list is terminated with an element containing a null pointer for the
+ * Name field.
+ *
+ * If a client creates an instance of this type then they are responsible for
+ * freeing it, and for ensuring that all strings have been retained over the
+ * course of its life. Clients receiving a copy from a callback are not
+ * responsible for managing lifetime or retain counts.
+ */
+typedef LLVMOrcCLookupSetElement *LLVMOrcCLookupSet;
+
+/**
+ * A reference to an orc::MaterializationUnit.
+ */
+typedef struct LLVMOrcOpaqueMaterializationUnit *LLVMOrcMaterializationUnitRef;
+
+/**
+ * A reference to an orc::JITDylib instance.
+ */
+typedef struct LLVMOrcOpaqueJITDylib *LLVMOrcJITDylibRef;
+
+/**
+ * A reference to an orc::ResourceTracker instance.
+ */
+typedef struct LLVMOrcOpaqueResourceTracker *LLVMOrcResourceTrackerRef;
+
+/**
+ * A reference to an orc::DefinitionGenerator.
+ */
+typedef struct LLVMOrcOpaqueDefinitionGenerator
+    *LLVMOrcDefinitionGeneratorRef;
+
+/**
+ * An opaque lookup state object. Instances of this type can be captured to
+ * suspend a lookup while a custom generator function attempts to produce a
+ * definition.
+ *
+ * If a client captures a lookup state object then they must eventually call
+ * LLVMOrcLookupStateContinueLookup to restart the lookup. This is required
+ * in order to release memory allocated for the lookup state, even if errors
+ * have occurred while the lookup was suspended (if these errors have made the
+ * lookup impossible to complete then it will issue its own error before
+ * destruction).
+ */
+typedef struct LLVMOrcOpaqueLookupState *LLVMOrcLookupStateRef;
+
+/**
+ * A custom generator function. This can be used to create a custom generator
+ * object using LLVMOrcCreateCustomCAPIDefinitionGenerator. The resulting
+ * object can be attached to a JITDylib, via LLVMOrcJITDylibAddGenerator, to
+ * receive callbacks when lookups fail to match existing definitions.
+ *
+ * GeneratorObj will contain the address of the custom generator object.
+ *
+ * Ctx will contain the context object passed to
+ * LLVMOrcCreateCustomCAPIDefinitionGenerator.
+ *
+ * LookupState will contain a pointer to an LLVMOrcLookupStateRef object. This
+ * can optionally be modified to make the definition generation process
+ * asynchronous: If the LookupStateRef value is copied, and the original
+ * LLVMOrcLookupStateRef set to null, the lookup will be suspended. Once the
+ * asynchronous definition process has been completed clients must call
+ * LLVMOrcLookupStateContinueLookup to continue the lookup (this should be
+ * done unconditionally, even if errors have occurred in the mean time, to
+ * free the lookup state memory and notify the query object of the failures. If
+ * LookupState is captured this function must return LLVMErrorSuccess.
+ *
+ * The Kind argument can be inspected to determine the lookup kind (e.g.
+ * as-if-during-static-link, or as-if-during-dlsym).
+ *
+ * The JD argument specifies which JITDylib the definitions should be generated
+ * into.
+ *
+ * The JDLookupFlags argument can be inspected to determine whether the original
+ * lookup included non-exported symobls.
+ *
+ * Finally, the LookupSet argument contains the set of symbols that could not
+ * be found in JD already (the set of generation candidates).
+ */
+typedef LLVMErrorRef (*LLVMOrcCAPIDefinitionGeneratorTryToGenerateFunction)(
+    LLVMOrcDefinitionGeneratorRef GeneratorObj, void *Ctx,
+    LLVMOrcLookupStateRef *LookupState, LLVMOrcLookupKind Kind,
+    LLVMOrcJITDylibRef JD, LLVMOrcJITDylibLookupFlags JDLookupFlags,
+    LLVMOrcCLookupSet LookupSet, size_t LookupSetSize);
+
+/**
+ * Predicate function for SymbolStringPoolEntries.
+ */
+typedef int (*LLVMOrcSymbolPredicate)(void *Ctx,
+                                      LLVMOrcSymbolStringPoolEntryRef Sym);
+
+/**
+ * A reference to an orc::ThreadSafeContext instance.
+ */
+typedef struct LLVMOrcOpaqueThreadSafeContext *LLVMOrcThreadSafeContextRef;
+
+/**
+ * A reference to an orc::ThreadSafeModule instance.
+ */
+typedef struct LLVMOrcOpaqueThreadSafeModule *LLVMOrcThreadSafeModuleRef;
+
+/**
+ * A reference to an orc::JITTargetMachineBuilder instance.
+ */
+typedef struct LLVMOrcOpaqueJITTargetMachineBuilder
+    *LLVMOrcJITTargetMachineBuilderRef;
+
+/**
+ * A reference to an orc::ObjectLayer instance.
+ */
+typedef struct LLVMOrcOpaqueObjectLayer *LLVMOrcObjectLayerRef;
+
+/**
+ * Attach a custom error reporter function to the ExecutionSession.
+ *
+ * The error reporter will be called to deliver failure notices that can not be
+ * directly reported to a caller. For example, failure to resolve symbols in
+ * the JIT linker is typically reported via the error reporter (callers
+ * requesting definitions from the JIT will typically be delivered a
+ * FailureToMaterialize error instead).
+ */
+void LLVMOrcExecutionSessionSetErrorReporter(
+    LLVMOrcExecutionSessionRef ES, LLVMOrcErrorReporterFunction ReportError,
+    void *Ctx);
+
+/**
+ * Return a reference to the SymbolStringPool for an ExecutionSession.
+ *
+ * Ownership of the pool remains with the ExecutionSession: The caller is
+ * not required to free the pool.
+ */
+LLVMOrcSymbolStringPoolRef
+LLVMOrcExecutionSessionGetSymbolStringPool(LLVMOrcExecutionSessionRef ES);
+
+/**
+ * Clear all unreferenced symbol string pool entries.
+ *
+ * This can be called at any time to release unused entries in the
+ * ExecutionSession's string pool. Since it locks the pool (preventing
+ * interning of any new strings) it is recommended that it only be called
+ * infrequently, ideally when the caller has reason to believe that some
+ * entries will have become unreferenced, e.g. after removing a module or
+ * closing a JITDylib.
+ */
+void LLVMOrcSymbolStringPoolClearDeadEntries(LLVMOrcSymbolStringPoolRef SSP);
+
+/**
+ * Intern a string in the ExecutionSession's SymbolStringPool and return a
+ * reference to it. This increments the ref-count of the pool entry, and the
+ * returned value should be released once the client is done with it by
+ * calling LLVMOrReleaseSymbolStringPoolEntry.
+ *
+ * Since strings are uniqued within the SymbolStringPool
+ * LLVMOrcSymbolStringPoolEntryRefs can be compared by value to test string
+ * equality.
+ *
+ * Note that this function does not perform linker-mangling on the string.
+ */
+LLVMOrcSymbolStringPoolEntryRef
+LLVMOrcExecutionSessionIntern(LLVMOrcExecutionSessionRef ES, const char *Name);
+
+/**
+ * Increments the ref-count for a SymbolStringPool entry.
+ */
+void LLVMOrcRetainSymbolStringPoolEntry(LLVMOrcSymbolStringPoolEntryRef S);
+
+/**
+ * Reduces the ref-count for of a SymbolStringPool entry.
+ */
+void LLVMOrcReleaseSymbolStringPoolEntry(LLVMOrcSymbolStringPoolEntryRef S);
+
+const char *LLVMOrcSymbolStringPoolEntryStr(LLVMOrcSymbolStringPoolEntryRef S);
+
+/**
+ * Reduces the ref-count of a ResourceTracker.
+ */
+void LLVMOrcReleaseResourceTracker(LLVMOrcResourceTrackerRef RT);
+
+/**
+ * Transfers tracking of all resources associated with resource tracker SrcRT
+ * to resource tracker DstRT.
+ */
+void LLVMOrcResourceTrackerTransferTo(LLVMOrcResourceTrackerRef SrcRT,
+                                      LLVMOrcResourceTrackerRef DstRT);
+
+/**
+ * Remove all resources associated with the given tracker. See
+ * ResourceTracker::remove().
+ */
+LLVMErrorRef LLVMOrcResourceTrackerRemove(LLVMOrcResourceTrackerRef RT);
+
+/**
+ * Dispose of a JITDylib::DefinitionGenerator. This should only be called if
+ * ownership has not been passed to a JITDylib (e.g. because some error
+ * prevented the client from calling LLVMOrcJITDylibAddGenerator).
+ */
+void LLVMOrcDisposeDefinitionGenerator(
+    LLVMOrcDefinitionGeneratorRef DG);
+
+/**
+ * Dispose of a MaterializationUnit.
+ */
+void LLVMOrcDisposeMaterializationUnit(LLVMOrcMaterializationUnitRef MU);
+
+/**
+ * Create a MaterializationUnit to define the given symbols as pointing to
+ * the corresponding raw addresses.
+ */
+LLVMOrcMaterializationUnitRef
+LLVMOrcAbsoluteSymbols(LLVMOrcCSymbolMapPairs Syms, size_t NumPairs);
+
+/**
+ * Create a "bare" JITDylib.
+ *
+ * The client is responsible for ensuring that the JITDylib's name is unique,
+ * e.g. by calling LLVMOrcExecutionSessionGetJTIDylibByName first.
+ *
+ * This call does not install any library code or symbols into the newly
+ * created JITDylib. The client is responsible for all configuration.
+ */
+LLVMOrcJITDylibRef
+LLVMOrcExecutionSessionCreateBareJITDylib(LLVMOrcExecutionSessionRef ES,
+                                          const char *Name);
+
+/**
+ * Create a JITDylib.
+ *
+ * The client is responsible for ensuring that the JITDylib's name is unique,
+ * e.g. by calling LLVMOrcExecutionSessionGetJTIDylibByName first.
+ *
+ * If a Platform is attached to the ExecutionSession then
+ * Platform::setupJITDylib will be called to install standard platform symbols
+ * (e.g. standard library interposes). If no Platform is installed then this
+ * call is equivalent to LLVMExecutionSessionRefCreateBareJITDylib and will
+ * always return success.
+ */
+LLVMErrorRef
+LLVMOrcExecutionSessionCreateJITDylib(LLVMOrcExecutionSessionRef ES,
+                                      LLVMOrcJITDylibRef *Result,
+                                      const char *Name);
+
+/**
+ * Returns the JITDylib with the given name, or NULL if no such JITDylib
+ * exists.
+ */
+LLVMOrcJITDylibRef LLVMOrcExecutionSessionGetJITDylibByName(const char *Name);
+
+/**
+ * Return a reference to a newly created resource tracker associated with JD.
+ * The tracker is returned with an initial ref-count of 1, and must be released
+ * with LLVMOrcReleaseResourceTracker when no longer needed.
+ */
+LLVMOrcResourceTrackerRef
+LLVMOrcJITDylibCreateResourceTracker(LLVMOrcJITDylibRef JD);
+
+/**
+ * Return a reference to the default resource tracker for the given JITDylib.
+ * This operation will increase the retain count of the tracker: Clients should
+ * call LLVMOrcReleaseResourceTracker when the result is no longer needed.
+ */
+LLVMOrcResourceTrackerRef
+LLVMOrcJITDylibGetDefaultResourceTracker(LLVMOrcJITDylibRef JD);
+
+/**
+ * Add the given MaterializationUnit to the given JITDylib.
+ *
+ * If this operation succeeds then JITDylib JD will take ownership of MU.
+ * If the operation fails then ownership remains with the caller who should
+ * call LLVMOrcDisposeMaterializationUnit to destroy it.
+ */
+LLVMErrorRef LLVMOrcJITDylibDefine(LLVMOrcJITDylibRef JD,
+                                   LLVMOrcMaterializationUnitRef MU);
+
+/**
+ * Calls remove on all trackers associated with this JITDylib, see
+ * JITDylib::clear().
+ */
+LLVMErrorRef LLVMOrcJITDylibClear(LLVMOrcJITDylibRef JD);
+
+/**
+ * Add a DefinitionGenerator to the given JITDylib.
+ *
+ * The JITDylib will take ownership of the given generator: The client is no
+ * longer responsible for managing its memory.
+ */
+void LLVMOrcJITDylibAddGenerator(LLVMOrcJITDylibRef JD,
+                                 LLVMOrcDefinitionGeneratorRef DG);
+
+/**
+ * Create a custom generator.
+ */
+LLVMOrcDefinitionGeneratorRef LLVMOrcCreateCustomCAPIDefinitionGenerator(
+    LLVMOrcCAPIDefinitionGeneratorTryToGenerateFunction F, void *Ctx);
+
+/**
+ * Get a DynamicLibrarySearchGenerator that will reflect process symbols into
+ * the JITDylib. On success the resulting generator is owned by the client.
+ * Ownership is typically transferred by adding the instance to a JITDylib
+ * using LLVMOrcJITDylibAddGenerator,
+ *
+ * The GlobalPrefix argument specifies the character that appears on the front
+ * of linker-mangled symbols for the target platform (e.g. '_' on MachO).
+ * If non-null, this character will be stripped from the start of all symbol
+ * strings before passing the remaining substring to dlsym.
+ *
+ * The optional Filter and Ctx arguments can be used to supply a symbol name
+ * filter: Only symbols for which the filter returns true will be visible to
+ * JIT'd code. If the Filter argument is null then all process symbols will
+ * be visible to JIT'd code. Note that the symbol name passed to the Filter
+ * function is the full mangled symbol: The client is responsible for stripping
+ * the global prefix if present.
+ */
+LLVMErrorRef LLVMOrcCreateDynamicLibrarySearchGeneratorForProcess(
+    LLVMOrcDefinitionGeneratorRef *Result, char GlobalPrefx,
+    LLVMOrcSymbolPredicate Filter, void *FilterCtx);
+
+/**
+ * Create a ThreadSafeContext containing a new LLVMContext.
+ *
+ * Ownership of the underlying ThreadSafeContext data is shared: Clients
+ * can and should dispose of their ThreadSafeContext as soon as they no longer
+ * need to refer to it directly. Other references (e.g. from ThreadSafeModules)
+ * will keep the data alive as long as it is needed.
+ */
+LLVMOrcThreadSafeContextRef LLVMOrcCreateNewThreadSafeContext(void);
+
+/**
+ * Get a reference to the wrapped LLVMContext.
+ */
+LLVMContextRef
+LLVMOrcThreadSafeContextGetContext(LLVMOrcThreadSafeContextRef TSCtx);
+
+/**
+ * Dispose of a ThreadSafeContext.
+ */
+void LLVMOrcDisposeThreadSafeContext(LLVMOrcThreadSafeContextRef TSCtx);
+
+/**
+ * Create a ThreadSafeModule wrapper around the given LLVM module. This takes
+ * ownership of the M argument which should not be disposed of or referenced
+ * after this function returns.
+ *
+ * Ownership of the ThreadSafeModule is unique: If it is transferred to the JIT
+ * (e.g. by LLVMOrcLLJITAddLLVMIRModule) then the client is no longer
+ * responsible for it. If it is not transferred to the JIT then the client
+ * should call LLVMOrcDisposeThreadSafeModule to dispose of it.
+ */
+LLVMOrcThreadSafeModuleRef
+LLVMOrcCreateNewThreadSafeModule(LLVMModuleRef M,
+                                 LLVMOrcThreadSafeContextRef TSCtx);
+
+/**
+ * Dispose of a ThreadSafeModule. This should only be called if ownership has
+ * not been passed to LLJIT (e.g. because some error prevented the client from
+ * adding this to the JIT).
+ */
+void LLVMOrcDisposeThreadSafeModule(LLVMOrcThreadSafeModuleRef TSM);
+
+/**
+ * Create a JITTargetMachineBuilder by detecting the host.
+ *
+ * On success the client owns the resulting JITTargetMachineBuilder. It must be
+ * passed to a consuming operation (e.g. LLVMOrcCreateLLJITBuilder) or disposed
+ * of by calling LLVMOrcDisposeJITTargetMachineBuilder.
+ */
+LLVMErrorRef LLVMOrcJITTargetMachineBuilderDetectHost(
+    LLVMOrcJITTargetMachineBuilderRef *Result);
+
+/**
+ * Create a JITTargetMachineBuilder from the given TargetMachine template.
+ *
+ * This operation takes ownership of the given TargetMachine and destroys it
+ * before returing. The resulting JITTargetMachineBuilder is owned by the client
+ * and must be passed to a consuming operation (e.g. LLVMOrcCreateLLJITBuilder)
+ * or disposed of by calling LLVMOrcDisposeJITTargetMachineBuilder.
+ */
+LLVMOrcJITTargetMachineBuilderRef
+LLVMOrcJITTargetMachineBuilderCreateFromTargetMachine(LLVMTargetMachineRef TM);
+
+/**
+ * Dispose of a JITTargetMachineBuilder.
+ */
+void LLVMOrcDisposeJITTargetMachineBuilder(
+    LLVMOrcJITTargetMachineBuilderRef JTMB);
+
+/**
+ * Dispose of an ObjectLayer.
+ */
+void LLVMOrcDisposeObjectLayer(LLVMOrcObjectLayerRef ObjLayer);
+
+LLVM_C_EXTERN_C_END
+
+#endif /* LLVM_C_ORC_H */
diff --git a/linux-x64/clang/include/llvm-c/OrcBindings.h b/linux-x64/clang/include/llvm-c/OrcBindings.h
deleted file mode 100644
index 9e92371..0000000
--- a/linux-x64/clang/include/llvm-c/OrcBindings.h
+++ /dev/null
@@ -1,172 +0,0 @@
-/*===----------- llvm-c/OrcBindings.h - Orc Lib C Iface ---------*- C++ -*-===*\
-|*                                                                            *|
-|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
-|* Exceptions.                                                                *|
-|* See https://llvm.org/LICENSE.txt for license information.                  *|
-|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
-|*                                                                            *|
-|*===----------------------------------------------------------------------===*|
-|*                                                                            *|
-|* This header declares the C interface to libLLVMOrcJIT.a, which implements  *|
-|* JIT compilation of LLVM IR.                                                *|
-|*                                                                            *|
-|* Many exotic languages can interoperate with C code but have a harder time  *|
-|* with C++ due to name mangling. So in addition to C, this interface enables *|
-|* tools written in such languages.                                           *|
-|*                                                                            *|
-|* Note: This interface is experimental. It is *NOT* stable, and may be       *|
-|*       changed without warning.                                             *|
-|*                                                                            *|
-\*===----------------------------------------------------------------------===*/
-
-#ifndef LLVM_C_ORCBINDINGS_H
-#define LLVM_C_ORCBINDINGS_H
-
-#include "llvm-c/Error.h"
-#include "llvm-c/Object.h"
-#include "llvm-c/TargetMachine.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-typedef struct LLVMOrcOpaqueJITStack *LLVMOrcJITStackRef;
-typedef uint64_t LLVMOrcModuleHandle;
-typedef uint64_t LLVMOrcTargetAddress;
-typedef uint64_t (*LLVMOrcSymbolResolverFn)(const char *Name, void *LookupCtx);
-typedef uint64_t (*LLVMOrcLazyCompileCallbackFn)(LLVMOrcJITStackRef JITStack,
-                                                 void *CallbackCtx);
-
-/**
- * Create an ORC JIT stack.
- *
- * The client owns the resulting stack, and must call OrcDisposeInstance(...)
- * to destroy it and free its memory. The JIT stack will take ownership of the
- * TargetMachine, which will be destroyed when the stack is destroyed. The
- * client should not attempt to dispose of the Target Machine, or it will result
- * in a double-free.
- */
-LLVMOrcJITStackRef LLVMOrcCreateInstance(LLVMTargetMachineRef TM);
-
-/**
- * Get the error message for the most recent error (if any).
- *
- * This message is owned by the ORC JIT Stack and will be freed when the stack
- * is disposed of by LLVMOrcDisposeInstance.
- */
-const char *LLVMOrcGetErrorMsg(LLVMOrcJITStackRef JITStack);
-
-/**
- * Mangle the given symbol.
- * Memory will be allocated for MangledSymbol to hold the result. The client
- */
-void LLVMOrcGetMangledSymbol(LLVMOrcJITStackRef JITStack, char **MangledSymbol,
-                             const char *Symbol);
-
-/**
- * Dispose of a mangled symbol.
- */
-void LLVMOrcDisposeMangledSymbol(char *MangledSymbol);
-
-/**
- * Create a lazy compile callback.
- */
-LLVMErrorRef LLVMOrcCreateLazyCompileCallback(
-    LLVMOrcJITStackRef JITStack, LLVMOrcTargetAddress *RetAddr,
-    LLVMOrcLazyCompileCallbackFn Callback, void *CallbackCtx);
-
-/**
- * Create a named indirect call stub.
- */
-LLVMErrorRef LLVMOrcCreateIndirectStub(LLVMOrcJITStackRef JITStack,
-                                       const char *StubName,
-                                       LLVMOrcTargetAddress InitAddr);
-
-/**
- * Set the pointer for the given indirect stub.
- */
-LLVMErrorRef LLVMOrcSetIndirectStubPointer(LLVMOrcJITStackRef JITStack,
-                                           const char *StubName,
-                                           LLVMOrcTargetAddress NewAddr);
-
-/**
- * Add module to be eagerly compiled.
- */
-LLVMErrorRef LLVMOrcAddEagerlyCompiledIR(LLVMOrcJITStackRef JITStack,
-                                         LLVMOrcModuleHandle *RetHandle,
-                                         LLVMModuleRef Mod,
-                                         LLVMOrcSymbolResolverFn SymbolResolver,
-                                         void *SymbolResolverCtx);
-
-/**
- * Add module to be lazily compiled one function at a time.
- */
-LLVMErrorRef LLVMOrcAddLazilyCompiledIR(LLVMOrcJITStackRef JITStack,
-                                        LLVMOrcModuleHandle *RetHandle,
-                                        LLVMModuleRef Mod,
-                                        LLVMOrcSymbolResolverFn SymbolResolver,
-                                        void *SymbolResolverCtx);
-
-/**
- * Add an object file.
- *
- * This method takes ownership of the given memory buffer and attempts to add
- * it to the JIT as an object file.
- * Clients should *not* dispose of the 'Obj' argument: the JIT will manage it
- * from this call onwards.
- */
-LLVMErrorRef LLVMOrcAddObjectFile(LLVMOrcJITStackRef JITStack,
-                                  LLVMOrcModuleHandle *RetHandle,
-                                  LLVMMemoryBufferRef Obj,
-                                  LLVMOrcSymbolResolverFn SymbolResolver,
-                                  void *SymbolResolverCtx);
-
-/**
- * Remove a module set from the JIT.
- *
- * This works for all modules that can be added via OrcAdd*, including object
- * files.
- */
-LLVMErrorRef LLVMOrcRemoveModule(LLVMOrcJITStackRef JITStack,
-                                 LLVMOrcModuleHandle H);
-
-/**
- * Get symbol address from JIT instance.
- */
-LLVMErrorRef LLVMOrcGetSymbolAddress(LLVMOrcJITStackRef JITStack,
-                                     LLVMOrcTargetAddress *RetAddr,
-                                     const char *SymbolName);
-
-/**
- * Get symbol address from JIT instance, searching only the specified
- * handle.
- */
-LLVMErrorRef LLVMOrcGetSymbolAddressIn(LLVMOrcJITStackRef JITStack,
-                                       LLVMOrcTargetAddress *RetAddr,
-                                       LLVMOrcModuleHandle H,
-                                       const char *SymbolName);
-
-/**
- * Dispose of an ORC JIT stack.
- */
-LLVMErrorRef LLVMOrcDisposeInstance(LLVMOrcJITStackRef JITStack);
-
-/**
- * Register a JIT Event Listener.
- *
- * A NULL listener is ignored.
- */
-void LLVMOrcRegisterJITEventListener(LLVMOrcJITStackRef JITStack, LLVMJITEventListenerRef L);
-
-/**
- * Unegister a JIT Event Listener.
- *
- * A NULL listener is ignored.
- */
-void LLVMOrcUnregisterJITEventListener(LLVMOrcJITStackRef JITStack, LLVMJITEventListenerRef L);
-
-#ifdef __cplusplus
-}
-#endif /* extern "C" */
-
-#endif /* LLVM_C_ORCBINDINGS_H */
diff --git a/linux-x64/clang/include/llvm-c/OrcEE.h b/linux-x64/clang/include/llvm-c/OrcEE.h
new file mode 100644
index 0000000..2435e74
--- /dev/null
+++ b/linux-x64/clang/include/llvm-c/OrcEE.h
@@ -0,0 +1,55 @@
+/*===-- llvm-c/OrcEE.h - OrcV2 C bindings ExecutionEngine utils -*- C++ -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This header declares the C interface to ExecutionEngine based utils, e.g.  *|
+|* RTDyldObjectLinkingLayer (based on RuntimeDyld) in Orc.                    *|
+|*                                                                            *|
+|* Many exotic languages can interoperate with C code but have a harder time  *|
+|* with C++ due to name mangling. So in addition to C, this interface enables *|
+|* tools written in such languages.                                           *|
+|*                                                                            *|
+|* Note: This interface is experimental. It is *NOT* stable, and may be       *|
+|*       changed without warning. Only C API usage documentation is           *|
+|*       provided. See the C++ documentation for all higher level ORC API     *|
+|*       details.                                                             *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_C_ORCEE_H
+#define LLVM_C_ORCEE_H
+
+#include "llvm-c/Error.h"
+#include "llvm-c/ExecutionEngine.h"
+#include "llvm-c/Orc.h"
+#include "llvm-c/TargetMachine.h"
+#include "llvm-c/Types.h"
+
+LLVM_C_EXTERN_C_BEGIN
+
+/**
+ * Create a RTDyldObjectLinkingLayer instance using the standard
+ * SectionMemoryManager for memory management.
+ */
+LLVMOrcObjectLayerRef
+LLVMOrcCreateRTDyldObjectLinkingLayerWithSectionMemoryManager(
+    LLVMOrcExecutionSessionRef ES);
+
+/**
+ * Add the given listener to the given RTDyldObjectLinkingLayer.
+ *
+ * Note: Layer must be an RTDyldObjectLinkingLayer instance or
+ * behavior is undefined.
+ */
+void LLVMOrcRTDyldObjectLinkingLayerRegisterJITEventListener(
+    LLVMOrcObjectLayerRef RTDyldObjLinkingLayer,
+    LLVMJITEventListenerRef Listener);
+
+LLVM_C_EXTERN_C_END
+
+#endif /* LLVM_C_ORCEE_H */
diff --git a/linux-x64/clang/include/llvm-c/Remarks.h b/linux-x64/clang/include/llvm-c/Remarks.h
index 7fb1665..ffe647a 100644
--- a/linux-x64/clang/include/llvm-c/Remarks.h
+++ b/linux-x64/clang/include/llvm-c/Remarks.h
@@ -15,14 +15,16 @@
 #ifndef LLVM_C_REMARKS_H
 #define LLVM_C_REMARKS_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 #ifdef __cplusplus
 #include <cstddef>
-extern "C" {
 #else
 #include <stddef.h>
 #endif /* !defined(__cplusplus) */
 
+LLVM_C_EXTERN_C_BEGIN
+
 /**
  * @defgroup LLVMCREMARKS Remarks
  * @ingroup LLVMC
@@ -30,7 +32,8 @@
  * @{
  */
 
-#define REMARKS_API_VERSION 0
+// 0 -> 1: Bitstream remarks support.
+#define REMARKS_API_VERSION 1
 
 /**
  * The type of the emitted remark.
@@ -137,6 +140,13 @@
 typedef struct LLVMRemarkOpaqueEntry *LLVMRemarkEntryRef;
 
 /**
+ * Free the resources used by the remark entry.
+ *
+ * \since REMARKS_API_VERSION=0
+ */
+extern void LLVMRemarkEntryDispose(LLVMRemarkEntryRef Remark);
+
+/**
  * The type of the remark. For example, it can allow users to only keep the
  * missed optimizations from the compiler.
  *
@@ -161,7 +171,7 @@
 LLVMRemarkEntryGetRemarkName(LLVMRemarkEntryRef Remark);
 
 /**
- * Get the name of the function being processsed when the remark was emitted.
+ * Get the name of the function being processed when the remark was emitted.
  *
  * \since REMARKS_API_VERSION=0
  */
@@ -199,6 +209,8 @@
  *
  * If there are no arguments in \p Remark, the return value will be `NULL`.
  *
+ * The lifetime of the returned value is bound to the lifetime of \p Remark.
+ *
  * \since REMARKS_API_VERSION=0
  */
 extern LLVMRemarkArgRef LLVMRemarkEntryGetFirstArg(LLVMRemarkEntryRef Remark);
@@ -208,6 +220,8 @@
  *
  * Returns `NULL` if there are no more arguments available.
  *
+ * The lifetime of the returned value is bound to the lifetime of \p Remark.
+ *
  * \since REMARKS_API_VERSION=0
  */
 extern LLVMRemarkArgRef LLVMRemarkEntryGetNextArg(LLVMRemarkArgRef It,
@@ -230,10 +244,27 @@
                                                       uint64_t Size);
 
 /**
+ * Creates a remark parser that can be used to parse the buffer located in \p
+ * Buf of size \p Size bytes.
+ *
+ * \p Buf cannot be `NULL`.
+ *
+ * This function should be paired with LLVMRemarkParserDispose() to avoid
+ * leaking resources.
+ *
+ * \since REMARKS_API_VERSION=1
+ */
+extern LLVMRemarkParserRef LLVMRemarkParserCreateBitstream(const void *Buf,
+                                                           uint64_t Size);
+
+/**
  * Returns the next remark in the file.
  *
- * The value pointed to by the return value is invalidated by the next call to
- * LLVMRemarkParserGetNext().
+ * The value pointed to by the return value needs to be disposed using a call to
+ * LLVMRemarkEntryDispose().
+ *
+ * All the entries in the returned value that are of LLVMRemarkStringRef type
+ * will become invalidated once a call to LLVMRemarkParserDispose is made.
  *
  * If the parser reaches the end of the buffer, the return value will be `NULL`.
  *
@@ -258,8 +289,9 @@
  * ```
  * LLVMRemarkParserRef Parser = LLVMRemarkParserCreateYAML(Buf, Size);
  * LLVMRemarkEntryRef Remark = NULL;
- * while ((Remark == LLVMRemarkParserGetNext(Parser))) {
+ * while ((Remark = LLVMRemarkParserGetNext(Parser))) {
  *    // use Remark
+ *    LLVMRemarkEntryDispose(Remark); // Release memory.
  * }
  * bool HasError = LLVMRemarkParserHasError(Parser);
  * LLVMRemarkParserDispose(Parser);
@@ -307,8 +339,6 @@
  * @} // endgoup LLVMCREMARKS
  */
 
-#ifdef __cplusplus
-}
-#endif /* !defined(__cplusplus) */
+LLVM_C_EXTERN_C_END
 
 #endif /* LLVM_C_REMARKS_H */
diff --git a/linux-x64/clang/include/llvm-c/Support.h b/linux-x64/clang/include/llvm-c/Support.h
index 097f784..866df32 100644
--- a/linux-x64/clang/include/llvm-c/Support.h
+++ b/linux-x64/clang/include/llvm-c/Support.h
@@ -15,11 +15,10 @@
 #define LLVM_C_SUPPORT_H
 
 #include "llvm-c/DataTypes.h"
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * This function permanently loads the dynamic library at the given path.
@@ -58,8 +57,6 @@
  */
 void LLVMAddSymbol(const char *symbolName, void *symbolValue);
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/Target.h b/linux-x64/clang/include/llvm-c/Target.h
index 4ef641e..518b46d 100644
--- a/linux-x64/clang/include/llvm-c/Target.h
+++ b/linux-x64/clang/include/llvm-c/Target.h
@@ -19,12 +19,11 @@
 #ifndef LLVM_C_TARGET_H
 #define LLVM_C_TARGET_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 #include "llvm/Config/llvm-config.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCTarget Target information
@@ -288,8 +287,6 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif /* defined(__cplusplus) */
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/TargetMachine.h b/linux-x64/clang/include/llvm-c/TargetMachine.h
index 28d7c09..f82edd9 100644
--- a/linux-x64/clang/include/llvm-c/TargetMachine.h
+++ b/linux-x64/clang/include/llvm-c/TargetMachine.h
@@ -19,12 +19,12 @@
 #ifndef LLVM_C_TARGETMACHINE_H
 #define LLVM_C_TARGETMACHINE_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Target.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
+
 typedef struct LLVMOpaqueTargetMachine *LLVMTargetMachineRef;
 typedef struct LLVMTarget *LLVMTargetRef;
 
@@ -156,8 +156,6 @@
 /** Adds the target-specific analysis passes to the pass manager. */
 void LLVMAddAnalysisPasses(LLVMTargetMachineRef T, LLVMPassManagerRef PM);
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/Transforms/AggressiveInstCombine.h b/linux-x64/clang/include/llvm-c/Transforms/AggressiveInstCombine.h
index c0b0141..db061a7 100644
--- a/linux-x64/clang/include/llvm-c/Transforms/AggressiveInstCombine.h
+++ b/linux-x64/clang/include/llvm-c/Transforms/AggressiveInstCombine.h
@@ -15,11 +15,10 @@
 #ifndef LLVM_C_TRANSFORMS_AGGRESSIVEINSTCOMBINE_H
 #define LLVM_C_TRANSFORMS_AGGRESSIVEINSTCOMBINE_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCTransformsAggressiveInstCombine Aggressive Instruction Combining transformations
@@ -35,9 +34,7 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif /* defined(__cplusplus) */
+LLVM_C_EXTERN_C_END
 
 #endif
 
diff --git a/linux-x64/clang/include/llvm-c/Transforms/Coroutines.h b/linux-x64/clang/include/llvm-c/Transforms/Coroutines.h
index 227e7cf..03b6822 100644
--- a/linux-x64/clang/include/llvm-c/Transforms/Coroutines.h
+++ b/linux-x64/clang/include/llvm-c/Transforms/Coroutines.h
@@ -19,11 +19,11 @@
 #ifndef LLVM_C_TRANSFORMS_COROUTINES_H
 #define LLVM_C_TRANSFORMS_COROUTINES_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
+#include "llvm-c/Transforms/PassManagerBuilder.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCTransformsCoroutines Coroutine transformations
@@ -32,24 +32,25 @@
  * @{
  */
 
-/** See llvm::createCoroEarlyPass function. */
+/** See llvm::createCoroEarlyLegacyPass function. */
 void LLVMAddCoroEarlyPass(LLVMPassManagerRef PM);
 
-/** See llvm::createCoroSplitPass function. */
+/** See llvm::createCoroSplitLegacyPass function. */
 void LLVMAddCoroSplitPass(LLVMPassManagerRef PM);
 
-/** See llvm::createCoroElidePass function. */
+/** See llvm::createCoroElideLegacyPass function. */
 void LLVMAddCoroElidePass(LLVMPassManagerRef PM);
 
-/** See llvm::createCoroCleanupPass function. */
+/** See llvm::createCoroCleanupLegacyPass function. */
 void LLVMAddCoroCleanupPass(LLVMPassManagerRef PM);
 
+/** See llvm::addCoroutinePassesToExtensionPoints. */
+void LLVMPassManagerBuilderAddCoroutinePassesToExtensionPoints(LLVMPassManagerBuilderRef PMB);
+
 /**
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif /* defined(__cplusplus) */
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/Transforms/IPO.h b/linux-x64/clang/include/llvm-c/Transforms/IPO.h
index 7a82ed4..3f2cadf 100644
--- a/linux-x64/clang/include/llvm-c/Transforms/IPO.h
+++ b/linux-x64/clang/include/llvm-c/Transforms/IPO.h
@@ -15,11 +15,10 @@
 #ifndef LLVM_C_TRANSFORMS_IPO_H
 #define LLVM_C_TRANSFORMS_IPO_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCTransformsIPO Interprocedural transformations
@@ -34,6 +33,9 @@
 /** See llvm::createConstantMergePass function. */
 void LLVMAddConstantMergePass(LLVMPassManagerRef PM);
 
+/** See llvm::createMergeFunctionsPass function. */
+void LLVMAddMergeFunctionsPass(LLVMPassManagerRef PM);
+
 /** See llvm::createCalledValuePropagationPass function. */
 void LLVMAddCalledValuePropagationPass(LLVMPassManagerRef PM);
 
@@ -55,9 +57,6 @@
 /** See llvm::createGlobalOptimizerPass function. */
 void LLVMAddGlobalOptimizerPass(LLVMPassManagerRef PM);
 
-/** See llvm::createIPConstantPropagationPass function. */
-void LLVMAddIPConstantPropagationPass(LLVMPassManagerRef PM);
-
 /** See llvm::createPruneEHPass function. */
 void LLVMAddPruneEHPass(LLVMPassManagerRef PM);
 
@@ -67,6 +66,21 @@
 /** See llvm::createInternalizePass function. */
 void LLVMAddInternalizePass(LLVMPassManagerRef, unsigned AllButMain);
 
+/**
+ * Create and add the internalize pass to the given pass manager with the
+ * provided preservation callback.
+ *
+ * The context parameter is forwarded to the callback on each invocation.
+ * As such, it is the responsibility of the caller to extend its lifetime
+ * until execution of this pass has finished.
+ *
+ * @see llvm::createInternalizePass function.
+ */
+void LLVMAddInternalizePassWithMustPreservePredicate(
+    LLVMPassManagerRef PM,
+    void *Context,
+    LLVMBool (*MustPreserve)(LLVMValueRef, void *));
+
 /** See llvm::createStripDeadPrototypesPass function. */
 void LLVMAddStripDeadPrototypesPass(LLVMPassManagerRef PM);
 
@@ -77,8 +91,6 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif /* defined(__cplusplus) */
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/Transforms/InstCombine.h b/linux-x64/clang/include/llvm-c/Transforms/InstCombine.h
index 166f278..ebe17d6 100644
--- a/linux-x64/clang/include/llvm-c/Transforms/InstCombine.h
+++ b/linux-x64/clang/include/llvm-c/Transforms/InstCombine.h
@@ -15,11 +15,10 @@
 #ifndef LLVM_C_TRANSFORMS_INSTCOMBINE_H
 #define LLVM_C_TRANSFORMS_INSTCOMBINE_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCTransformsInstCombine Instruction Combining transformations
@@ -35,9 +34,7 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif /* defined(__cplusplus) */
+LLVM_C_EXTERN_C_END
 
 #endif
 
diff --git a/linux-x64/clang/include/llvm-c/Transforms/PassManagerBuilder.h b/linux-x64/clang/include/llvm-c/Transforms/PassManagerBuilder.h
index d164c00..6e13e18 100644
--- a/linux-x64/clang/include/llvm-c/Transforms/PassManagerBuilder.h
+++ b/linux-x64/clang/include/llvm-c/Transforms/PassManagerBuilder.h
@@ -14,13 +14,12 @@
 #ifndef LLVM_C_TRANSFORMS_PASSMANAGERBUILDER_H
 #define LLVM_C_TRANSFORMS_PASSMANAGERBUILDER_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
 typedef struct LLVMOpaquePassManagerBuilder *LLVMPassManagerBuilderRef;
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCTransformsPassManagerBuilder Pass manager builder
@@ -83,8 +82,6 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/Transforms/Scalar.h b/linux-x64/clang/include/llvm-c/Transforms/Scalar.h
index 031cf98..ba14250 100644
--- a/linux-x64/clang/include/llvm-c/Transforms/Scalar.h
+++ b/linux-x64/clang/include/llvm-c/Transforms/Scalar.h
@@ -19,11 +19,10 @@
 #ifndef LLVM_C_TRANSFORMS_SCALAR_H
 #define LLVM_C_TRANSFORMS_SCALAR_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCTransformsScalar Scalar transformations
@@ -35,6 +34,9 @@
 /** See llvm::createAggressiveDCEPass function. */
 void LLVMAddAggressiveDCEPass(LLVMPassManagerRef PM);
 
+/** See llvm::createDeadCodeEliminationPass function. */
+void LLVMAddDCEPass(LLVMPassManagerRef PM);
+
 /** See llvm::createBitTrackingDCEPass function. */
 void LLVMAddBitTrackingDCEPass(LLVMPassManagerRef PM);
 
@@ -65,6 +67,9 @@
 /** See llvm::createInstructionCombiningPass function. */
 void LLVMAddInstructionCombiningPass(LLVMPassManagerRef PM);
 
+/** See llvm::createInstSimplifyLegacyPass function. */
+void LLVMAddInstructionSimplifyPass(LLVMPassManagerRef PM);
+
 /** See llvm::createJumpThreadingPass function. */
 void LLVMAddJumpThreadingPass(LLVMPassManagerRef PM);
 
@@ -123,9 +128,6 @@
 /** See llvm::createTailCallEliminationPass function. */
 void LLVMAddTailCallEliminationPass(LLVMPassManagerRef PM);
 
-/** See llvm::createConstantPropagationPass function. */
-void LLVMAddConstantPropagationPass(LLVMPassManagerRef PM);
-
 /** See llvm::demotePromoteMemoryToRegisterPass function. */
 void LLVMAddDemoteMemoryToRegisterPass(LLVMPassManagerRef PM);
 
@@ -144,6 +146,9 @@
 /** See llvm::createLowerExpectIntrinsicPass function */
 void LLVMAddLowerExpectIntrinsicPass(LLVMPassManagerRef PM);
 
+/** See llvm::createLowerConstantIntrinsicsPass function */
+void LLVMAddLowerConstantIntrinsicsPass(LLVMPassManagerRef PM);
+
 /** See llvm::createTypeBasedAliasAnalysisPass function */
 void LLVMAddTypeBasedAliasAnalysisPass(LLVMPassManagerRef PM);
 
@@ -160,8 +165,6 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif /* defined(__cplusplus) */
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/Transforms/Utils.h b/linux-x64/clang/include/llvm-c/Transforms/Utils.h
index 63594ab..30d1ae6 100644
--- a/linux-x64/clang/include/llvm-c/Transforms/Utils.h
+++ b/linux-x64/clang/include/llvm-c/Transforms/Utils.h
@@ -19,11 +19,10 @@
 #ifndef LLVM_C_TRANSFORMS_UTILS_H
 #define LLVM_C_TRANSFORMS_UTILS_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCTransformsUtils Transformation Utilities
@@ -45,9 +44,7 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif /* defined(__cplusplus) */
+LLVM_C_EXTERN_C_END
 
 #endif
 
diff --git a/linux-x64/clang/include/llvm-c/Transforms/Vectorize.h b/linux-x64/clang/include/llvm-c/Transforms/Vectorize.h
index e383481..0de4583 100644
--- a/linux-x64/clang/include/llvm-c/Transforms/Vectorize.h
+++ b/linux-x64/clang/include/llvm-c/Transforms/Vectorize.h
@@ -20,11 +20,10 @@
 #ifndef LLVM_C_TRANSFORMS_VECTORIZE_H
 #define LLVM_C_TRANSFORMS_VECTORIZE_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCTransformsVectorize Vectorization transformations
@@ -43,8 +42,6 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif /* defined(__cplusplus) */
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/Types.h b/linux-x64/clang/include/llvm-c/Types.h
index 612c7d3..4e02498 100644
--- a/linux-x64/clang/include/llvm-c/Types.h
+++ b/linux-x64/clang/include/llvm-c/Types.h
@@ -15,10 +15,9 @@
 #define LLVM_C_TYPES_H
 
 #include "llvm-c/DataTypes.h"
+#include "llvm-c/ExternC.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCSupportTypes Types and Enumerations
@@ -172,8 +171,6 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif
diff --git a/linux-x64/clang/include/llvm-c/lto.h b/linux-x64/clang/include/llvm-c/lto.h
index 2467722..4dbc77f 100644
--- a/linux-x64/clang/include/llvm-c/lto.h
+++ b/linux-x64/clang/include/llvm-c/lto.h
@@ -16,6 +16,8 @@
 #ifndef LLVM_C_LTO_H
 #define LLVM_C_LTO_H
 
+#include "llvm-c/ExternC.h"
+
 #ifdef __cplusplus
 #include <cstddef>
 #else
@@ -44,7 +46,7 @@
  * @{
  */
 
-#define LTO_API_VERSION 24
+#define LTO_API_VERSION 27
 
 /**
  * \since prior to LTO_API_VERSION=3
@@ -98,9 +100,7 @@
 /** opaque reference to a thin code generator */
 typedef struct LLVMOpaqueThinLTOCodeGenerator *thinlto_code_gen_t;
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * Returns a printable string.
@@ -298,6 +298,21 @@
 lto_module_get_linkeropts(lto_module_t mod);
 
 /**
+ * If targeting mach-o on darwin, this function gets the CPU type and subtype
+ * that will end up being encoded in the mach-o header. These are the values
+ * that can be found in mach/machine.h.
+ *
+ * \p out_cputype and \p out_cpusubtype must be non-NULL.
+ *
+ * Returns true on error (check lto_get_error_message() for details).
+ *
+ * \since LTO_API_VERSION=27
+ */
+extern lto_bool_t lto_module_get_macho_cputype(lto_module_t mod,
+                                               unsigned int *out_cputype,
+                                               unsigned int *out_cpusubtype);
+
+/**
  * Diagnostic severity.
  *
  * \since LTO_API_VERSION=7
@@ -514,12 +529,25 @@
 /**
  * Sets options to help debug codegen bugs.
  *
+ * This function takes one or more options separated by spaces.
+ * Warning: passing file paths through this function may confuse the argument
+ * parser if the paths contain spaces.
+ *
  * \since prior to LTO_API_VERSION=3
  */
 extern void
 lto_codegen_debug_options(lto_code_gen_t cg, const char *);
 
 /**
+ * Same as the previous function, but takes every option separately through an
+ * array.
+ *
+ * \since prior to LTO_API_VERSION=26
+ */
+extern void lto_codegen_debug_options_array(lto_code_gen_t cg,
+                                            const char *const *, int number);
+
+/**
  * Initializes LLVM disassemblers.
  * FIXME: This doesn't really belong here.
  *
@@ -550,6 +578,56 @@
 lto_codegen_set_should_embed_uselists(lto_code_gen_t cg,
                                       lto_bool_t ShouldEmbedUselists);
 
+/** Opaque reference to an LTO input file */
+typedef struct LLVMOpaqueLTOInput *lto_input_t;
+
+/**
+  * Creates an LTO input file from a buffer. The path
+  * argument is used for diagnotics as this function
+  * otherwise does not know which file the given buffer
+  * is associated with.
+  *
+  * \since LTO_API_VERSION=24
+  */
+extern lto_input_t lto_input_create(const void *buffer,
+                                    size_t buffer_size,
+                                    const char *path);
+
+/**
+  * Frees all memory internally allocated by the LTO input file.
+  * Upon return the lto_module_t is no longer valid.
+  *
+  * \since LTO_API_VERSION=24
+  */
+extern void lto_input_dispose(lto_input_t input);
+
+/**
+  * Returns the number of dependent library specifiers
+  * for the given LTO input file.
+  *
+  * \since LTO_API_VERSION=24
+  */
+extern unsigned lto_input_get_num_dependent_libraries(lto_input_t input);
+
+/**
+  * Returns the ith dependent library specifier
+  * for the given LTO input file. The returned
+  * string is not null-terminated.
+  *
+  * \since LTO_API_VERSION=24
+  */
+extern const char * lto_input_get_dependent_library(lto_input_t input,
+                                                    size_t index,
+                                                    size_t *size);
+
+/**
+ * Returns the list of libcall symbols that can be generated by LTO
+ * that might not be visible from the symbol table of bitcode files.
+ *
+ * \since prior to LTO_API_VERSION=25
+ */
+extern const char *const *lto_runtime_lib_symbols_list(size_t *size);
+
 /**
  * @} // endgoup LLVMCLTO
  * @defgroup LLVMCTLTO ThinLTO
@@ -846,54 +924,10 @@
 extern void thinlto_codegen_set_cache_size_files(thinlto_code_gen_t cg,
                                                  unsigned max_size_files);
 
-/** Opaque reference to an LTO input file */
-typedef struct LLVMOpaqueLTOInput *lto_input_t;
-
-/**
-  * Creates an LTO input file from a buffer. The path
-  * argument is used for diagnotics as this function
-  * otherwise does not know which file the given buffer
-  * is associated with.
-  *
-  * \since LTO_API_VERSION=24
-  */
-extern lto_input_t lto_input_create(const void *buffer,
-                                    size_t buffer_size,
-                                    const char *path);
-
-/**
-  * Frees all memory internally allocated by the LTO input file.
-  * Upon return the lto_module_t is no longer valid.
-  *
-  * \since LTO_API_VERSION=24
-  */
-extern void lto_input_dispose(lto_input_t input);
-
-/**
-  * Returns the number of dependent library specifiers
-  * for the given LTO input file.
-  *
-  * \since LTO_API_VERSION=24
-  */
-extern unsigned lto_input_get_num_dependent_libraries(lto_input_t input);
-
-/**
-  * Returns the ith dependent library specifier
-  * for the given LTO input file. The returned
-  * string is not null-terminated.
-  *
-  * \since LTO_API_VERSION=24
-  */
-extern const char * lto_input_get_dependent_library(lto_input_t input,
-                                                    size_t index,
-                                                    size_t *size);
-
 /**
  * @} // endgroup LLVMCTLTO_CACHING
  */
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif /* LLVM_C_LTO_H */